Shuttle or filling-carrier for looms.



O. A. SAWYER.

SHUTTLE 0R FILLING CARRIER FOR LOOMS.

APPLIOATION FILED DOT. 25, 1909.

1,076,393., Patented 001x21, 1913.

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0. A. SAWYER.

SHUTTLE 0R FILLING CARRIER FOR LOOMS.

APPLICATION FILED .001. 25, 1909.

Patented Oct. 21, 1913.

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i ATTORNEY.

COLUMBIA PLANDGRAPH CO.,WASHINI1TON. n. c.

UNITED STATES PATENT @FFICE.

ORBAEN A. SAWYER, OF LOWELL, MASSACHUSETTS, ASSIGNOB, BY MESNE ASSIGN- MENTS, TO THISSELL COMPANY, OF PORTLAND,

MAINE, A CORPORATION OF MAINE.

SHUTTLE OR FILLING-CARRIER FOR LOOMS.

Application filed. October 25, 1909.

To all whom it may concern Be it known that I, ORREN A. SAwYnR, a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented a certain new and useful Improvement in Shuttles or Filling-Carriers for Looms, of which the following is a specification.

This invention relates to shuttle or filling carriers for looms and its object is to provide means for producing a substantially increased tension on the filling just before the exhaustion of said filling.

In a previous application, No. 477,504, filed February 13, 1909, I have shown a device arranged in a shuttle-chamber near the pivoted end of the spindle to create a friction upon the filling wound upon the bobbin or cop-tube, in such a manner as to retard the unwinding of said filling just before the exhaustion of the filling and I have shown in said application pieces of cloth and brushes secured in the shuttle-body in such a manner as to create such friction and tension. The present invention serves the same purpose as said cloth or brushes and will be used to operate controlling means for stop-motion devices or weft-replenishing devices as stated in said previous application.

In this application I have shown as a tension-producing means a spring, as of metal, adapted to press upon the filling first wound upon and last unwound from the bobbin or cop-tube, to increase the tension of the filling just before the exhaustion of the filling. The pressure of such a spring is more capable of exact regulation and is less subject to be affected injuriously by wear and such a spring can be more readily attached and detached from the shuttle-body if necessary than the devices for a like purpose shown in said previous application. I have also provided in a novel and improved manner, for causing the tension-producing means to act in connection with the last few pick-lengths upon the filling-holder in producing the increased tension of the yarn.

In the accompanying drawing on three sheets, the first three figures show a leafspring or spring formed of sheet material, Figure 1 being a plan of the bottom of a shuttle provided with such a spring; Fig. 2, a side elevation of an inverted shuttle partly in section with such a spring; Fig.

Specification of Letters Patent.

Patented Got. 21, 1913.

Serial No. 524,331.

3, a plan of the bobbin-retaining catch and said spring. In the other figures the spring is shown in the form of a wire. Fig. 4 is a plan'of a bottom of a shuttle provided with a wire spring; Fig. 5, a side elevation of an inverted shuttle partly in section to show the tension spring in side elevation; Fig. 6, a plan of the shuttle, bobbin and spring, the bobbin being broken away above the middle of the spring. Figs. 7, 8 and 9 show the wire spring applied to the filling on a coptube, instead of a bobbin. With this exception Fig. 7 is similar to Fig. 6 and Fig. 8 like Fig. 5; Fig. 9 being a vertical crosssection on the line 9 9 in Fig. 8.

A indicates the shuttle-body; B, a spindle, pivoted at b and held in operative position by a spring 0,1), abobbin; E, a cop or mass of filling wound on the bobbin, as shown in Figs. 16;-al1 of these parts being of the usual construction and operation, except as hereinafter specified.

The head of the bobbin is provided with an annular groove d, into which groove the yarn is wound to form a ring or bunch e of filling before forming the cop E upon the body (Z1 or barrel of the bobbin, the yarn passing diagonally over the ungrooved part (Z of the bobbin-head from the last wind or turn of yarn in the bunch to the first turn of the cop.

. A tension spring which in Figs. 18 is represented as a leaf-spring F is rigidly secured to the shuttle-body in such a manner that the free end of said spring bears upon the uncovered space between the bunch e and the cop E so that when the cop has been wholly unwound and the yarn is being drawn from the bunch, said yarn in unwinding will pass under the free end of said spring F, said free end having integral therewith an arc-shaped extension f substantially concentric with the uncovered part of the bobbin between the cop proper and the bunch and pressing upon said uncovered space with sufficient force to create an extra or abnormal tension upon the yarn as it passes under the arc f. Either or both ends of the arc f are turned outward or away from the center of said are to allow the yarn to enter between said are and the bobbin, as shown at F.

In Figs. 13 the spring F is represented as secured to the shuttle-body by the same screw 9 which holds the bobbin retaining filling before the filling is entirely exhausted, and may be used for the first of these purposes with the devices shown and described in my application for Patent No. 477,503,. filed February 13, 1909, and for the other of j these purposes with the invention which is; the subject of another application No. Z

4577,502 filed February 13, 1909, by me.

In Figs. t-6, I have shown a different} form of spring F formed of wire, the middle portion of which is bent into an arc f adapted to fit and press upon the uncovered space between the cop and the bunch for the purpose above described with regard to the spring F. From the arc the wire rises vertically on each side of the bobbin and spindle and near the top of'the shuttle-body at f on each side of the bobbin is bent backward and near its extreme ends is formed into loops or eyes at f through which screws f are driven to secure sa1d spr ng F to the shuttle-body,

said eyes and the adjacent end portions of sa1d spring bemg let into depressions at below the top of the shuttle, to avoid any danger of these parts of the spring catching on the warp-threads Except as described the parts shown in Figs. k6 are like those shown in Figs. 13

marked by the same letters of reference.

1 In Figs. 7-9 a cop-tube D is substituted; ,for the bobbin shown in the figures already described and the arc-shaped middle vportion; .ofthe spring F has a narrower arc f to v afiord a suitable bearing on the cop-tube; whichis usually much smaller in diameter;

than the head or barrel of a bobbin. In other respects the parts represented in Figs. 7-4) have already been described and are designated by the corresponding letters of reference, the bunch 6 being wound on the tube and not in a groove thereof.

1 do not limit myself in all cases to separating the ring or bunch of yarn at the base of the cop from said base by an uncovered space, because in some embodiments of the invention the ring or bunch may be continu ous with said base and the uncovered space be omitted.

I claim as my invention l. The combination in a filling-carrier of a shuttle-body, a filling-holder, means for supporting said holder in said body and a spring for producing a substantially in creased tension on the filling just before the exhaustion of said filling from said holder.

The combination in a filling-carrier, of a shuttle-body, a filling-holder, means for supporting said holder in said body and a metallic spring for producing a substantially increased tension on the filling just before the exhaustion of said filling from said holder. 1

3. The combination in a filling-carrier, of a shuttle-body, a fillingholderj adapted to carry a ring or bunch of yarn and a cop of yarn separated by an uncovered space anda spring supported by said shuttle-body and arranged to press upon said uncovered space In witness whereof, I have hereunto af fixed my signature in the presence of two witnesses. a

j ORREN A. sawrnn.

Witnesses:

A ERT M. 'Moonn, GRACE CROWL Y.

Copies of this patent maybe obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

to create a tension upon yarn being un- 

